Auto-injector



FIG. 1 is a front perspective view of an auto-injector embodying the principles of my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof.

FIG. 5 is a side view thereof, the opposite side being a mirror image thereof; and,

FIG. 6 is a top view thereof, the bottom view being a mirror image thereof.

The auto-injector being shown with inner and outer openings in the rear thereof shown in phantom lines and forming no part of the claimed invention.

The broken line showing of parts of the rear openings of the auto-injector is included for the purpose of illustrating use and environment and forms no part of the claimed design. 

The ornamental design for an auto-injector, as shown and described. 